I don't substitute you don't substitute he doesn't substitute we don't substitute you don't substitute they don't substitute
Present continuous
I'm not substituting you aren't substituting he isn't substituting we aren't substituting you aren't substituting they aren't substituting
Preterite
I didn't substitute you didn't substitute he didn't substitute we didn't substitute you didn't substitute they didn't substitute
Preterite continuous
I wasn't substituting you weren't substituting he wasn't substituting we weren't substituting you weren't substituting they weren't substituting
Present perfect
I haven't substituted you haven't substituted he hasn't substituted we haven't substituted you haven't substituted they haven't substituted
Present perfect continuous
I haven't been substituting you haven't been substituting he hasn't been substituting we haven't been substituting you haven't been substituting they haven't been substituting
Pluperfect
I hadn't substituted you hadn't substituted he hadn't substituted we hadn't substituted you hadn't substituted they hadn't substituted
Pluperfect continuous
I hadn't been substituting you hadn't been substituting he hadn't been substituting we hadn't been substituting you hadn't been substituting they hadn't been substituting
Future
I won't substitute you won't substitute he won't substitute we won't substitute you won't substitute they won't substitute
Future continuous
I won't be substituting you won't be substituting he won't be substituting we won't be substituting you won't be substituting they won't be substituting
Future perfect
I won't have substituted you won't have substituted he won't have substituted we won't have substituted you won't have substituted they won't have substituted
Future perfect continuous
I won't have been substituting you won't have been substituting he won't have been substituting we won't have been substituting you won't have been substituting they won't have been substituting
Conditional
Present
I wouldn't substitute you wouldn't substitute he wouldn't substitute we wouldn't substitute you wouldn't substitute they wouldn't substitute
Present continuous
I wouldn't be substituting you wouldn't be substituting he wouldn't be substituting we wouldn't be substituting you wouldn't be substituting they wouldn't be substituting
Past
I wouldn't have substituted you wouldn't have substituted he wouldn't have substituted we wouldn't have substituted you wouldn't have substituted they wouldn't have substituted
Past continuous
I wouldn't have been substituting you wouldn't have been substituting he wouldn't have been substituting we wouldn't have been substituting you wouldn't have been substituting they wouldn't have been substituting
Imperative
Imperative
do not substitute Let's not substitute do not substitute